Wireless communication device and a method therein for reporting signal quality measurements

Patent metadata

Field	Value
Publication number	US-10869214-B2
Application number	US-201716475479-A
Country	US
Kind code	B2
Filing date	Jan 12, 2017
Priority date	Jan 12, 2017
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A method performed by a wireless communication device for reporting signal quality measurements. The wireless communication device operates in a wireless communications network and comprises a first wireless network configured with single Demodulation Reference Signals (DMRS) and a second wireless network configured with dual DMRS.
The wireless communication device receives a set of DMRS from the first wireless network and a set of dual DMRS from the second wireless network.
The wireless communication device selects any one or more out of a first activity and a second activity based on the speed of the wireless communication device. The first activity comprises performing first signal quality measurements of the set of single DMRS and reporting at least some of the first signal quality measurements to the wireless communications network, and the second activity comprises performing a second signal quality measurement of the set of dual DMRS and reporting at least some of the second signal quality measurements to the wireless communications network.

First claim

The invention claimed is:

1. A method performed by a wireless communication device for reporting signal quality measurements, which wireless communication device operates in a wireless communications network, which wireless communications network comprises a first wireless network configured with single Demodulation Reference Signals (DMRS) and a second wireless network configured with dual DMRS, the method comprising:
receiving a set of DMRS comprising one or more single DMRS from the first wireless network, and a set of dual DMRS comprising one or more dual DMRS from the second wireless network,
based on the speed of the wireless communication device, selecting any one or more out of a first activity and a second activity, wherein:
the first activity comprises performing first signal quality measurements of each single DMRS out of the set of single DMRS and reporting at least some of the first signal quality measurements to the wireless communications network, and
the second activity comprises performing a second signal quality measurement of each dual DMRS out of the set of dual DMRS and reporting at least some of the second signal quality measurements to the wireless communications network.

2. The method according to claim 1 , wherein the selecting any one or more out of the first activity and the second activity based on the speed of the wireless communication device comprises,
when the speed is below a first speed threshold value, acting according to the first activity related to the single DMRS,
when the speed is above a second speed threshold value, acting according to the second activity related to the dual DMRS, and
when the speed is between the first speed threshold value and the second speed threshold value, acting according to both the first activity related to the single DMRS and the second activity related to the dual DMRS,
wherein the second speed threshold value is equal or larger than the first speed threshold value.

3. The method according to claim 1 , further comprising:
performing a first signal quality measurements of each single DMRS out of the set of single DMRS and a second signal quality measurements of each dual DMRS out of the set of dual DMRS, and
finding a first signal quality value being highest among the results of the performed first signal quality measurements of the set of single DMRS, and
finding a second signal quality value being highest among the results of the performed second signal quality measurements of the set of dual DMRS,
wherein selecting any one or more out of the first activity and the second activity further is based on the difference between the first signal quality value and the second signal quality value.

4. The method according to claim 3 , wherein the selecting any one or more out of the first activity and the second activity based on the speed of the wireless communication device comprises,
when the speed is below a first speed threshold value and when further the second signal quality value minus the first signal quality value is below a predetermined value, acting according to the first activity related to the set of single DMRS,
when the speed is below the first speed threshold value and when further the second signal quality value minus the first signal quality value is above the predetermined value, acting according to both the first activity related to the set of single DMRS and the second activity related to the set of dual DMRS.

5. The method according to claim 3 , wherein the selecting any one or more out of the first activity and the second activity based on the speed of the wireless communication device comprises,
when the speed is above a second speed threshold value and when further the first signal quality value minus the second signal quality value is below a predetermined value, acting according to the second activity related to the set of dual DMRS, and
when the speed is above the second speed threshold value and when further the first signal quality value minus the second signal quality value is above the predetermined value, acting according to both the first activity related to the set of single DMRS and the second activity related to the set of dual DMRS.

6. The method according to claim 1 , wherein selecting any one or more out of the first activity and the second activity comprises selecting to report signal quality measurements on any one or more out of the first wireless network and the second wireless network, and wherein,
the acting according to the first activity is performed when the first wireless network is selected to report signal quality measurements on,
the acting according to the second activity is performed when the second wireless network is selected to report signal quality measurements on, and wherein
the acting according to both the first activity and to the second activity is performed when both the first wireless network and the second wireless network are selected to report signal quality measurements on.

7. A computer program product comprising a non-transitory computer readable medium storing instructions, which when executed by a processor, cause the processor to perform actions according to claim 1 .

8. A wireless communication device for reporting signal quality measurements, which wireless communication device is operable in a wireless communications network, which wireless communications network is adapted to comprise a first wireless network configured with single Demodulation Reference Signals (DMRS) and a second wireless network configured with dual DMRS, the wireless communication device comprising a processor and a memory containing instructions executable by the processor whereby the wireless communication device is configured to:
receive a set of DMRS comprising one or more single DMRS from the first wireless network, and
receive a set of dual DMRS comprising one or more dual DMRS from the second wireless network,
based on the speed of the wireless communication device, select any one or more out of a first activity and a second activity, wherein:
the first activity comprises to perform first signal quality measurements of each single DMRS out of the set of single DMRS and report at least some of the first signal quality measurements to the wireless communications network, and
the second activity comprises to perform a second signal quality measurement of each dual DMRS out of the set of dual DMRS and report at least some of the second signal quality measurements to the wireless communications network.

9. The wireless communication device according to claim 8 , wherein the selection of any one or more out of the first activity and the second activity based on the speed of the wireless communication device to be performed comprises:
when the speed is below a first speed threshold value, acting according to the first activity related to the single DMRS,
when the speed is above a second speed threshold value, acting according to the second activity related to the dual DMRS, and
when the speed is between the first speed threshold value and the second speed threshold value, acting according to both the first activity related to the single DMRS and the second activity related to the dual DMRS,
wherein the second speed threshold value is equal or larger than the first speed threshold value.

10. The wireless communication device according to claim 8 , wherein the wireless communication device further is configured to:
perform a first signal quality measurements of each single DMRS out of the set of single DMRS and a second signal quality measurements of each dual DMRS out of the set of dual DMRS, and
find a first signal quality value being highest among the results of the perfor

Assignees

• Ericsson Telefon Ab L M
• Telefonaktiebolaget Lm Ericcson Publ

Inventors

• Biswas Ashim
• Bohlin Marc
• Elgcrona Anders
• Schrammar Nicolas
• Wikström Magnus
• Zhang Qiang

Classifications

• H04L1/003 Primary

  Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits · CPC title

• H04W4/027

  using movement velocity, acceleration information · CPC title

• H04W48/18

  Selecting a network or a communication service · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title